Virgil a



(M :ae1.)

V. A. KREPPS.

S'EAL LOGK lFOR lUAB, DOORS.

No. 290,690. Patentd Dec. 25; 1883.

INVENI'OR BY /%%M ATTORNEY VIO Nirn SrATi-S ATEN'r rricn,

VIRGIL A. KREPPS, OF NEWv YORK, N.

SEAL-LOCK FOR CAR-DOO RS.

SPECIFICATION forming part of Letters Patent No. 290,690, dated December 25, 1883. Application filed February 24, 1583. (Modem To all whom, it may concern:

Be it known that I, VIRGIL A. KRErrs, a citizen of the United States, and residing at New York city, in the county and State of New York, have invented new and useful Improvements in Oar-Door Locks, of which the following is a specification.

This invention consists of iniproveinents in the lock for oar-doors, and applicable to other sliding doors, described in the applicationNo. 7 4,881, filed by me for a patent, and now pending in the Patent Office, and which consists,

` essentially, of a notched bolt rigidly attached to the door, to slide into a lock-case in the door-j amb, containing a catch which gravitates into the notches in the bolt, with a hornshaped extension from the back of the lockcase, to which the stem of the catch is secured by a padlock, the present improvements being designed to facilitate the proper entry of the bolt into the lock-case when the door settles or warps or springs so as to shift the bolt from the right position; also, to facilitate the placing of the pivot-bolt of the lock-catch rightly, andto provide more substantial means of keeping it in position in use; also, to improve the means of applying the seal, and of holding the catch up out of the bolt while sliding the door back to open it, all as hereinafter fully described, reference being made to the accompanying drawings, in which- Figure 1 is an inside'elevation of the lockcase in the plane of the bolt and the catch, the door being locked. Fig. 2 is an elevation of the lock, showing the contrivance forholding up the catch to free the bolt while the door is being opened. Fig. 3 is an elevation showing the contrivance for applying the seal, and Fig. 4 is a plan of a portion of the bolt. Fig. 5 is a partial side view.

The door a, which slides along the Ways to and from the jamb-cleat c of the door-frame, has a hook-headed bolt, d, bolted to the inside flush with the surface and extending from the edge e suitably for projecting into the space f within the lock-case for engaging with the hooks g of the gravity-catch h by its hooks i, the catch being arranged on the pivot-boltj suitably for being raised by thebeveled corner k of the bolt. In this kind of lock it is desirable to employ two hooks on the bolt and catch, so that when it may be desired to secure the door without entirely closing it, for Ventilating the car, it can be accomplished by engaging the first hook of the bolt with the first hook ofthe catch, the arrangement being such that when the door is entirely shut both hooks of the bolt and catch will be engaged.

It will be seen that in such arrangement of double hooks it is very essential that the bolt shall not be allowed to drop below the one line or horizontal plane in which it must lie to enable both hooks to engage alike. Moreover, the catch must not fall below a certain line or plane in engaging with the bolt, otherwise the slack may become so great between the shank, which extends back out of thelockcase to be Secured for looking it, and the de- Vice to which said shank is secured that it may be unhooked without breaking the lock; yet in this kind of sliding door it is difiicult, if .not practi cally impossible, to effectually guard against the sagging of the door, so that in a short time the bolt will fall below its proper level.

The present improvements for facilitating the proper entry of the bolt-head into the lookcase when the door sags or springs consists cending from the bottom of the slot m in the front plate, ot, through which the bolt enters the lock-case, the said wall being arranged in suitable relation to the catch h to raise the bolt and the door, so as to be secured by the catch.

For correcting the lateral divergence of the bolt by the warping or springing of the door or the door-frame sidewise, it may be constructed with the tapered sides o on its front end, which enables the point to enter the slot m, and thereby insure the entry of the bolt when a square end would fail to enter.

For a substantial wearing-surface to the incline Z, I construct the front plate, n, with a tongue-flange, p, to fit onthe bottom shoulder of the space out in the cleat c for the lock-case.

For insuring the proper location of the pivotbolt j with relation to the catch and the bolt, and so as to cause the hooks to mesh rightly and secure thebolt without slack when the door is closed, and also for the better protection of the bolt against shifting out of place by the shocks to which it is subj ect, and by the swelling and shrinking of the wood, I make the of the sloping wall Z, in this form of lock as- ICO back plate, g, for closing the space f, wherein the catch and bolt interlock, with a pivothole flange, s,extending along the front side of the cleat c of the door-frame, and having a hole for the bolt located in the right position, and being a guide by which to bore the hole through the cleat after the plate q has been attached, thus making certain of having the hole exactly in the right place. The plate q, thns provided with the pivot-hole flange, being fitted to the cleat c,witl1 its upper end on a level with the upper end of plate n, insures the location of the pivot-bolt for the catch the right distance above the incline p for the bolt to be properly engaged with the catch, the bolt being in con- `tact with said incline, as when the door has sagged and the bolt has been forced up the incline and the door raised thereby.

For holding` up the catch after it has been raised to release the bolt,to enable the attendant to use both hands for shoving back and Opening the door,which often binds hard and cannot be opened with one hand while the other holds the catch, I now propose to employ a catch-plate, t, pivoted at u to plate qunder the shank o of thehook-catch 71,, and having a hookpoint, w, that swings into thenotch vrin thehole `z/,wherein the hasp of the padlock is placed to lock the catch over the horn z, attached to plate q for that purpose, the said book-plate t to be shifted up into the position represented in Fi g. 2 when the catch is to be held up by it, and I propose to employ this plate for fastening the catch,when locked with the bolt, by making it in the curved shape and proper dimensions at a' to rise up to the under side of the shank of the latch by swinging the-point w down on the stop-stud b', and providing it with one or more slots or holes, c', and making corresponding holes or slots, d', in the plate q,with which the holes c' will coincide when the seal e is to be applied.

The Stud-pin b and the pivot u hold the plate t effectually against pressing it down to allow the shank of the catch to be pressed down, and the curve a' makes it necessary to turn the plate farther than the seal will allow for retaining the catch that way, so that the seal wire or strip must be entirely out off before the lock can be opened. fire or thin strips of metal may be used for the seals, as preferred.

What I claim, and desire to secure by Letters Patent, is-

l. In a lock consisting of the hook-bolt d, rigidly attached to the door, and hook-catch h, pivoted to the lock-case and located over the bolt, the inclined wall Z of the bottom of the lock-spaeef, in combination with the bolt and the catch, and being arranged in the relation to them whereby the bolt will be guided up to the catch when the door sags, substantially as described.

2. The back plate, q, having the pivot-bolt flange s, in combination with the catch h and bolt d, substantially as described.

3. The plate t, having hook-point w, and being pivoted to plate q, and with relation to shank fu of the lock-catch to engage it by notch a: of hole y, to hold the catch while Opening the door, substantially as described.

4. The plate t, having hook-point w, curved portion a', and a hole or holes, c', in combination with the shank of catch h and with plate g, having stud b' and holes d', for securing the lock by the seal, substantially as described.

In witness whereof I have herennto signed my name in the presence of two subscribing witnesses.

EUGENE Y. ELIOT, W. J. MoRGAN. 

